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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
sleep NighttimeWhat's Visible Now?
All Constellations » Centaurus » 


Altitude: -24.2°   Azimuth: 116.7°   Direction: East-South-East

HR4724 is a variable giant star in the constellation of Centaurus.

HR4724 visual magnitude is 5.73. Because of its reltive faintness, HR4724 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4724 is -0.034 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4724 star
DSS2 image of HR4724. The red arrow shows the motion of HR4724 during the next 10000 years (-5.67 arcmin in Right Ascension and -1.00 arcmin in declination);

Key facts about HR4724


HR4724 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -24.2°
Azimuth: 116.7°
Direction: East-South-East

Celestial coordinates and finder chart of HR4724

HR4724 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4724 are provided in the following table:

12h 25m 21s
-35° 11’ 11”

The simplified sky map below shows the position of HR4724 in the sky:

Finder chart HR4724 star
Simplified finder chart for HR4724.

Visibility of HR4724 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR4724 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 125.2°
Max altitude: 3.3°
Azimuth: 234.8°

Distance of HR4724 from the Sun and relative movement

HR4724 is distant 420.10 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

128.87 pc
420.10 ly
-11 km/s
-0.034 arcsec/year
-0.006 arcsec/year

Spectral properties of HR4724

HR4724 belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4724 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4724. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4724